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环保再生纸会有污染吗?

发布日期:2023-09-06 15:14 浏览量:1165

与普通纸张相比,环保再生纸制浆过程中对大气、水质等造成的环境污染大大减少。造纸业废水量大,分布广泛,是我国污染严重的行业之一。生产一吨纸浆需要100吨(木浆)到400吨(草浆)的水,这些污水大多需要排出。


我国造纸业排放的需氧有机物占全国排放总量的30%以上。纸张造成的黑液污染,每1吨纸浆排出10吨黑液。废水中含有大量的碳水化合物、蛋白质、油脂和木质素等。在微生物的作用下,这些物质容易分解,在分解过程中消耗大量的氧气,从而降低水中的氧气含量,影响鱼类和其它水生生物的生长。在水中溶解氧耗尽后,水处于厌氧状态,有机物在厌氧菌的作用下,产生硫化氢、氨、硫醇等难闻有毒气体,使水质恶化。在环保再生纸的制造过程中,废水的排放量可以减少50%,尤其是在造纸初期,不会产生污染严重的黑液,可以大大减少。 环保再生纸的推广意义: 1.保护环境,节约资源,减少污染。


 据造纸专家和环保专家提供的资料显示,一吨废纸可以生产850公斤质量好的环保再生纸,节约木材3立方米(相当于26棵3~4年的树),节约化学原料300公斤,节约煤炭1.2吨,节约电力600度;并且可以减少大量的废物。 2.有利于促进循环经济。 循环经济是根据生态规律,整体设计生产、运输、消费和废物处理,利用高科技手段实现资源减少和废物资源化。将资源生产和消费废物的单向运行模式的终点转化为二次资源。

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